I am shooting night time shots of my city (Pittsburgh), and notice that the lighted signs on buildings appear to be sharp, but often seem slightly out of focus / have a reflection. For example in the attached photo (1 second, F10, ISO 200), the lighted building signs (e.g. UPMC, Gateway Health, Wyndham) appear to be slightly out of focus, but almost seem to be "doubled".
Could this be caused by a UV filter on the lens creating a reflection, or is it just a case of needing a sturdier tripod??
Could be both. Could be something else. Posting an example and storing the original is the best way to discuss ideas.
mth412 wrote:
I am shooting night time shots of my city (Pittsburgh), and notice that the lighted signs on buildings appear to be sharp, but often seem slightly out of focus / have a reflection. For example in the attached photo (1 second, F10, ISO 200), the lighted building signs (e.g. UPMC, Gateway Health, Wyndham) appear to be slightly out of focus, but almost seem to be "doubled".
Could this be caused by a UV filter on the lens creating a reflection, or is it just a case of needing a sturdier tripod??
I am shooting night time shots of my city (Pittsbu... (
show quote)
Its hard to help you without an image.
You could try shots with and without the filter.
FreddB
Loc: PA - Delaware County
How much flicker does a neon sign produce in 1 second?
mth412 wrote:
I am shooting night time shots of my city (Pittsburgh), and notice that the lighted signs on buildings appear to be sharp, but often seem slightly out of focus / have a reflection. For example in the attached photo (1 second, F10, ISO 200), the lighted building signs (e.g. UPMC, Gateway Health, Wyndham) appear to be slightly out of focus, but almost seem to be "doubled".
Could this be caused by a UV filter on the lens creating a reflection, or is it just a case of needing a sturdier tripod??
I am shooting night time shots of my city (Pittsbu... (
show quote)
My sense is that it is your tripod. Are you using a remote trigger.If not becarefull you don't set up vibrations when you click the shutter. If so, redo the image without the UV filter.
FreddB wrote:
How much flicker does a neon sign produce in 1 second?
Ahhhhh, what does this have to do with the OP's question?
Wouldn't that depend on what country your in? I think Europe and the U/K is 50 Hz
Gene51
Loc: Yonkers, NY, now in LSD (LowerSlowerDelaware)
mth412 wrote:
I am shooting night time shots of my city (Pittsburgh), and notice that the lighted signs on buildings appear to be sharp, but often seem slightly out of focus / have a reflection. For example in the attached photo (1 second, F10, ISO 200), the lighted building signs (e.g. UPMC, Gateway Health, Wyndham) appear to be slightly out of focus, but almost seem to be "doubled".
Could this be caused by a UV filter on the lens creating a reflection, or is it just a case of needing a sturdier tripod??
I am shooting night time shots of my city (Pittsbu... (
show quote)
Post a sample image with "store original" box checked. But from your description, I'd bet you need better support.
Actually 120. But this would relate to exposure, not lack of sharpness.
mth412 wrote:
I am shooting night time shots of my city (Pittsburgh), and notice that the lighted signs on buildings appear to be sharp, but often seem slightly out of focus / have a reflection. For example in the attached photo (1 second, F10, ISO 200), the lighted building signs (e.g. UPMC, Gateway Health, Wyndham) appear to be slightly out of focus, but almost seem to be "doubled".
Could this be caused by a UV filter on the lens creating a reflection, or is it just a case of needing a sturdier tripod??
I am shooting night time shots of my city (Pittsbu... (
show quote)
Is it windy where you are shooting? Night shots are shot at a slow shutter speed and the slightest movement could cause this type of effect. Also, I would remove any filters prior to shooting at night.
Gene51 wrote:
Post a sample image with "store original" box checked. But from your description, I'd bet you need better support.
You're probably on the money. I doubt it would be shutter shock. Testing that could easily be done I suppose with mirror lock up.
Gene51
Loc: Yonkers, NY, now in LSD (LowerSlowerDelaware)
Haydon wrote:
You're probably on the money. I doubt it would be shutter shock. Testing that could easily be done I suppose with mirror lock up.
I think it is shutter shock. And mirror lock up will most definitely address vibration caused by the mirror, but I doubt it will address micro vibrations caused by the combination of the shutter curtain opening and using a less than stable tripod.
It is hard to diagnose this without seeing the patient, however.
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